| abstract |
The present invention provides the application of a catalyst component A in olefin polymerization, the catalyst component consists of a solid component a containing magnesium, titanium, halogen and an internal electron donor compound and a compound containing The organic silicon compound b with Si-H functional groups is contacted; the magnesium in the solid component a comes from the raw material alkoxymagnesium, and the temperature at which the catalyst component A participates in catalyzing olefin polymerization is 80-130°C. The olefin polymerization catalyst component and the olefin polymerization catalyst prepared by the present invention still have high polymerization activity, good stereospecific ability, high bulk density of the obtained polymer, and high polymer melt index (good hydrogenation sensitivity of the catalyst) during high-temperature polymerization. Comprehensive performance, with good industrial application value. |